Le weekend 26 September 2009

It is supposed to be spring, but the fronts are hammering us, so up into the wave it will be, at least on Saturday, and perhaps also Sunday.
Saturday
Anabatic warm front, 237km N, moving 20kp Southwards,vertical motion 220m/hr, rain in 2.3 hrs (ie at 16h20 local)
Surface wind - NW20, 5000ft NW40, 10000ft WNW80, 15000ft WNW 110, 20000ft WNW 120
Windshear is 22ms/4km (on the high side) with a low CAT at 6500 - 16000ft
Wave from 8300 ft to 27800f (contactable much lower in the BreedeRiver Valley), all at 3.1ms!!!!
Cloud 3-5/8 from 10 000 - 22000ft
Max 18.5C Dewpoint 7.5C Trigger 18.3C
Expect 0.7 ms - 1.1 ms to 4800ft
Boundary layer energy at 20J/kg
Sunday
Swinging south, postfrontal and rising pressure
Anabatic cold front, moving 20kph to the N, 139km to the North, vertical motion 109m/hr, rain behind the front.
Surface wind - S 40, 5000ft S 20, 10000ft W 60, 15000ft WNW 150, 20000ft WNW 170
Strong surface Cat and Medium CAT from 5000ft - 17000ft
Windshear is high at 35ms/4km
Rain is predictedWave from 8300ft to 14000ft at 3.8ms
Cloud 5 - 8/8 from the 2000 - 5000ft and 3/8 from 22 - 25 000ft
Max 10.1 Dewpoint 7.8 Trigger 11.5
Expect 0.2 ms - 0.4 ms to 3000ft
Boundary layer energy 0 j/kg

EY